Improvement in the manufacture of artificial fuel



waited $tatna agatrnt miijlirr.

EDWARD JOSEPH DE SMEDT, OF NEW YORK, N. Y., ASSIGNOR TO NEW YORKIMPROVED ANTHRAOITE GOAL COMPANY, OF SAME PLACE.

Letters Patent No. 103,580, dated May 31, 1870.

IMPROVEMENT IN THE MANUFACTURE OI ARTIFICIAL FUEL.

The Schedule referred to; i-n these Letters Patent and making part ofthe same.

To alLwho-m it mag iconccrn Be it known that I, EDWARD J osnmt Du SMEDT,of the city, county, and State of New York, have invented a new andimproved Composition of Matter to be used as a Fuel; and I do herebydeclare that the following is a full,.-clear, and exact description ofthe same.

My invention consists in combining the asphalt obrained from Trinidadand other of the West India islands with anthracite or bituminous coal.

The process of manufacture is as follows:

The coal may be cracked, broken, or pulverized, by any suitablemechanical means, about as fine as coarse sand. In practice, however, itwould be preferable, on the score of economy, to use the dust refuse ofBen], which may be obtained in unlimited quantity in the vicinity ofmines, and also from theyards of deal-. ers throughout the country, ataninappreciable cost.

The coal dust and asphalt or bitumen are well mixed, and heated by anordinary furnace, and well stirred while being heated. Theyare broughtto a degree of heat suficieut to cause the particles to adhere togetherand form a conglomeratemass capable of being molded and compressed intocompact masses through the medium of any suitable apparatus.

The proportion of the above-named ingredients should vary according tothe use designed for the fuel. For ordinary stove purposes the amount ofasphalt or bitumen should be comparatively small, say, from two to fourper cent; but for smelting furnaces, and, in other cases, where a longflame surface is required, and a high degree of heat well distributed incircuitous fines, the proportion of asphalt or bitumen should be fromten to twenty per cent. The greater the percentage of the latter-namedsubstance, the greater the combustibility of the fuel will be, and,consequently, the more intense the heat.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is- Thecomposition of matter formed by combining Trinidad bitumen or asphaltand other bitumens or asphalts which are obtained from the \Vest Indiaislands, with anthracite or bituminous coal, either with or withoutaflux, substantially as described, for the purpose specified.

E. 'J. DE SMEDT.

Witnesses:

(lass. SCHENK, G. M. AcKnuMAN.

